* Renamed variables and preparing to make dense staged features
* Rolled back the progressive feature addition
* Got the semi-dense feature structure working
* Refactored features. Calculating label sets without the label set variables
* Added subtrees to Kernel. Preparing for dynamic programming
* Working on dynamic beam. Now runs through early and max for 1 and 5 without turning training on. Still probably broken.
* Running, now need to free disused states
* More work on new beam
* Commenting out unused dense feats stuff
* Fixed bug introduced when nr_class was switched to